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dc.contributor.authorWarnan, Julien
dc.contributor.authorCabanetos, Clement
dc.contributor.authorBude, Romain
dc.contributor.authorEl Labban, Abdulrahman
dc.contributor.authorLI, LIANG
dc.contributor.authorBeaujuge, Pierre
dc.date.accessioned2015-08-03T11:54:06Z
dc.date.available2015-08-03T11:54:06Z
dc.date.issued2014-05-13
dc.identifier.issn08974756
dc.identifier.doi10.1021/cm5002303
dc.identifier.urihttp://hdl.handle.net/10754/563544
dc.description.abstractPoly(benzo[1,2-b:4,5-b′]dithiophene-thieno[3,4-c]pyrrole-4,6-dione) (PBDTTPD) polymer donors yield some of the highest open-circuit voltages (V OC, ca. 0.9 V) and fill factors (FF, ca. 70%) in conventional bulk-heterojunction (BHJ) solar cells with PCBM acceptors. Recent work has shown that the incorporation of ring substituents into the side chains of the BDT motifs in PBDTTPD can induce subtle variations in material properties, resulting in an increase of the BHJ device VOC to ∼1 V. In this contribution, we report on the synthesis of N-alkyloyl-substituted TPD motifs (TPD(CO)) and show that the electron-deficient motifs can further lower both the polymer LUMO and HOMO levels, yielding device VOC > 1 V (up to ca. 1.1 V) in BHJ solar cells with PCBM. Despite the high VOC achieved (i.e., low polymer HOMO), BHJ devices cast from TPD(CO)-based polymer donors can reach power conversion efficiencies (PCEs) of up to 6.7%, making these promising systems for use in the high-band-gap cell of tandem solar cells. © 2014 American Chemical Society.
dc.description.sponsorshipThe authors acknowledge financial support under Baseline Research Funding from King Abdullah University of Science and Technology (KAUST). The authors thank KAUST Analytical Core Laboratories for mass spectrometry, SEC measurements, and elemental analyses, and Sandra Seywald (MPIP - Mainz, Germany) for additional SEC measurements. The authors thank the Advanced Imaging and Characterization Laboratories at KAUST for technical support. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource user facility, operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences.
dc.publisherAmerican Chemical Society (ACS)
dc.titleElectron-deficient N-alkyloyl derivatives of thieno[3,4-c]pyrrole-4,6-dione yield efficient polymer solar cells with open-circuit voltages > 1 v
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Lab
dc.contributor.departmentCore Labs
dc.contributor.departmentChemical Science Program
dc.identifier.journalChemistry of Materials
kaust.personWarnan, Julien
kaust.personCabanetos, Clement
kaust.personEl Labban, Abdulrahman
kaust.personLI, LIANG
kaust.personBeaujuge, Pierre
kaust.personBude, Romain
dc.relation.isSupplementedByWarnan, J., Cabanetos, C., Bude, R., El Labban, A., Li, L., & Beaujuge, P. M. (2014). CCDC 1029500: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/cc13k8pm
dc.relation.isSupplementedByDOI:10.5517/cc13k8pm
dc.relation.isSupplementedByHANDLE:http://hdl.handle.net/10754/624376


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